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Old Jun 9, 2013 | 07:16 AM
  #1  
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More electric help

I know this is probably in the wrong forum ...but....


I am NOT electric kind of guy at ALL...I am dumb when comes to elec on cars house... trains...anything so...


I need a power wire 12v at the back of a 2005 F350 Dually.....that come on when you start the truck ....if anyone can tell me EXACTLY where it is and how to tests it to make sure...of if you gents know for sure I will trust....



pleasurably behind the rear wheels would be an awsume area for it to appear... .
 
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Old Jun 9, 2013 | 07:19 AM
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Do you mind running a wire back there? There is a spare wire under the drivers side dash. I am not aware of any that are already at the rear of the truck.
 
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Old Jun 9, 2013 | 08:32 AM
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Isn't one of the pins on the 7-pin plug a 12V battery charge line?

-blaine
 
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Old Jun 9, 2013 | 08:36 AM
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Could be wrong, but I didn't think it was "switched power".
 
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Old Jun 9, 2013 | 08:59 AM
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The black 12v is key-on at the trailer plug

Josh
 
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Old Jun 9, 2013 | 08:59 AM
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Originally Posted by Frankenbiker
Isn't one of the pins on the 7-pin plug a 12V battery charge line?

-blaine
Yes one of the pins has power to it whenever the key is on.
 
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Old Jun 9, 2013 | 09:02 AM
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It is switched:

https://www.ford-trucks.com/forums/5...ml#post7126109

Thanks to Greywolf.

-blaine
 
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Old Jun 9, 2013 | 09:37 AM
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So ...the one at the 1 o-clock position is the switched power ??



Looking to the rear for the trailer plug ~ the pins are reversed - and the simple way to keep it straight is to think in terms of "PASSENGER SIDE" and DRIVER SIDE"

The passenger is like a bad SPOUSE:
POWER
TO
BREAK
(you)

(12 volt power, Turn and brake light-right side, BRAKE SIGNAL to electric brakes)
 
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Old Jun 9, 2013 | 10:01 AM
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Originally Posted by IB Tim
So ...the one at the 1 o-clock position is the switched power ??



Looking to the rear for the trailer plug ~ the pins are reversed - and the simple way to keep it straight is to think in terms of "PASSENGER SIDE" and DRIVER SIDE"

The passenger is like a bad SPOUSE:
POWER
TO
BREAK
(you)

(12 volt power, Turn and brake light-right side, BRAKE SIGNAL to electric brakes)

That's correct, upper right... 1:00

Josh
 
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Old Jun 9, 2013 | 10:21 AM
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Thanks...I am going under the truck now
 
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Old Jun 9, 2013 | 12:47 PM
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Originally Posted by Bullitt390
The black 12v is key-on at the trailer plug

Josh
Yes one of the pins has power to it whenever the key is on.
It is switched:

https://www.ford-trucks.com/forums/59...ml#post7126109

Thanks to Greywolf.
Good to know!
 
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Old Jun 9, 2013 | 08:05 PM
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Not good no just black wire
 
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Old Jun 9, 2013 | 08:20 PM
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Originally Posted by IB Tim
Not good no just black wire
What's the problem?

That wire is 12 volts switched, if you aren't getting voltage you'll need to check the fuses.

Josh
 
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Old Jun 10, 2013 | 03:37 AM
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AND the relay.

If you need it I can dig up the 06 diagram.

Sean
 
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Old Jun 10, 2013 | 05:13 AM
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MY bad....the wire in my harness...there is no JUST black one it has what looks like a white stripe and the wire does not look black it is by far the darkest color...my eyes have a bit of an issue seeing the color......now my 2005 has the Tow Boss on it ...does that make a difference ?

I am trying to find switched power for the Pacific Dualies 80006 Tire Pressure Monitoring system....my transmitter is mounted on the DS by the spare..
 

Last edited by IB Tim; Jun 10, 2013 at 05:50 AM.
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